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try hIT *##7465625*638*12345678#
exactly what does this code do?
I want to know if its safe to try it, just for knowledge, i hope it won't erase any data.
Seems to be some sort of network unlock code (the only info I can see is here but it is for the Samsung Omnia.)
Do you mean you want to remove the screen with a password when you unlock the phone? (E.g Press unlock > phone goes immediately to password screen > enter password> home screen)
If so that should be under Settings > Location & Security > [Something like] Lock Screen/Screen Unlock
Not exactly, the OP has probably forgotten the password and is trying to find a way to skip the password screen altogether and go directly to home screen.